Newbie Needs help-Jerks when wet no code - Ford Powerstroke Diesel Forum
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Old 04-07-2010, 12:24 PM
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Exclamation Newbie truck jerks hard when wet - no code

Need help from user community as I have a 99 PS 4x4 automatic with 175k and recently on the highway my truck jerked and showed the CES light. When I pulled over and used code reader it showed no codes? When I started back up the light was gone and was good for weeks, then when on the higway again when wet the same thing happend again. Tried using the code reader while engine still running and nothing but light goes off when engine gets turned off and back to the ON position to read. HELP as this is concerning as the Jerk feels like my E150 when I run it over 100mph and the govener jerks it telling me to slow down but I know this is not the case with the truck as I dont go that fast with it. ** HELP ***

Last edited by bahsignature; 04-07-2010 at 01:11 PM.
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Old 04-07-2010, 12:34 PM
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I thought you were calling us jerks

Anyhow, what about CPS?
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Old 04-07-2010, 05:38 PM
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have you checked your connections under the hood?

Other than that heres a for ya
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Old 04-08-2010, 12:06 PM
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i've heard of window seals leaking and gettin water into the pcm. check for moisture!
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Old 04-08-2010, 12:56 PM
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Where can I locate the PCM on my 99 F350? I can attempt to seal it for moisure then see if this works......... Thanks for the tip and I guess its a seal it and wait and see from there
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Old 04-08-2010, 03:36 PM
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I had the same problem. It stopped once I replaced the CPS. Mine would do it when the windshield wipers were in intermitant. Weird... Mine would throw the light on also, but there would be no code. Try that first. Cheap fix.
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Old 04-08-2010, 03:59 PM
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I had a bad alternator on my truck, and it caused random CPS-like stalls and 'hic-ups'. After replacing both alt's around New years, no problems.
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